An exploitable shared memory permissions vulnerability exists in the functionality of X11 Mesa 3D Graphics Library 19.1.2. An attacker can access the shared memory without any specific permissions to trigger this vulnerability.

The Intel drivers in Mesa 8.0.x and 9.0.x allow context-dependent attackers to cause a denial of service (reachable assertion and crash) and possibly execute arbitrary code via vectors involving 3d graphics that trigger an out-of-bounds array access, related to the fs_visitor::remove_dead_constants function. NOTE: this issue might be related to CVE-2013-0796.